I stand by my statement on Blackwater, that they are a private security firm contracted by the US Government and not a part of the US Armed Forces. People should not be using the alleged actions of mercernaries to mischaracterize the members of our armed forces. As for the investigation, I was going on this article in the Int'l Herald Tribune published on Nov. 20:
http://www.iht.com/articles/2007/11/20/news/black.php
It was unclear how many subpoenas had been issued. Prosecutors are also seeking company records compiled at the time of the shooting as well as employee work histories and military service files.
Federal prosecutors have issued grand jury subpoenas to some of the Blackwater employees present at a Sept. 16 shooting in Baghdad in which the company's security personnel killed 17 Iraqi civilians, lawyers in the case and government officials briefed on the matter said.
The opening of the grand jury inquiry is a significant step in the case because it indicates that prosecutors believe that there is enough evidence of wrongdoing to warrant a formal criminal investigation.